baber/WOPTO huggingface dataset:
Patent GB-1281857-A (GB)
Title: Frames for photographs and the like
Inventor: FIRTH CATHERINE HARGRAVE
IPC: A47G1/06
Filed: 1971-04-19
Abstract: 1281857 Photograph frames C H FIRTH 19 April 1971 [4 March 1970] 22961/71 Heading A4X A frame for a photograph sandwiched between a transparent sheet 1 and a back support sheet 2 comprises two channel strips 5, 6 of rigid metal or plastics having a channel 8 for fitting to a pair of opposite edges of sheets 1, 2 and a resilient wire retainer 4 comprising two legs 10 with end hooks 11 and inter-connected by a coil 12. In use, one turn of the coil 12 and the hooks 11 are lodged in channels 9 in the respective strips 5, 6, the hooks 11 being urged apart along channel 9 and urging strips 5, 6 towards one another. Two retainers 4 may be used side-by-side. The retainer 4 may include extensions providing rear feet. The legs 10 may be inter-connected by a V-portion. For different photograph sizes hooks 11 may be slideable along legs 10, or the legs 10 may have a series of loops or re-entrant corrugations. Alternatively, the retainer may comprise two hooks connected by a tension spring or by a tie provided with a turnbuckle to shorten it, and the retainer will extend perpendicularly to strips 5, 6.
Patent GB-655244-A (GB)
Title: Improvements in radio transmitting and receiving stations
IPC: H04B7/155
Filed: 1945-09-06
Abstract: 655,244. Radio signalling. MURPHY RADIO, Ltd., DAVIES, K. S., and HAWKINS, G. F. Sept. 6, 1945, No. 23003. [Class 40 (v)] The invention relates to a radio broadcasting relay system comprising a master transmitter and a plurality of relay stations, the transmitting frequencies being sufficiently spaced so that their beat frequencies lie outside the modulation range, but sufficiently close so that all fall within the range of a broadly tuned receiver. According to the invention, the receiver at each relay station operates as a superhet, the intermediate frequency in each case being equal to the difference between the retransmitted frequency and the frequency of the signals received from the master station. The arrangement enables reasonably uniform field strength to be provided over an area, to improve reception by ultimate receivers. Fig. 1 shows the elements at a relay station, in which signals from the master transmitter are received on aerial RA and after frequency changing, detection and low-frequency amplification, the signals are used to modulate the local transmitter T, the signals being retransmitted from aerial TA. The local heterodyne oscillations are derived from the local transmitter by the pick-up of oscillations on the receiving aerial RA from the transmitting aerial TA. A second frequency changer and local oscillator may also be provided in the receiver. To avoid instability, the frequency changer should have a flat conversion conductance characteristic, so that the modulation of the retransmitted carrier may be eliminated from the output of the frequency changer. A diode frequency changer may be employed. In an alternative arrangement, the heterodyne oscillations are supplied to the receiver from a pre-modulation stage of the transmitter, the coupling including amplification and multiplication stages if desired. The receiver aerial may then consist of two dipoles a half-wave length apart, the transmitter aerial being symmetrically spaced between them as far away as convenient, to reduce the local pick-up as much as possible. This arrangement enables 100 per cent modulation of the retransmitted carrier to be effected without causing instability.
Patent GB-1178268-A (GB)
Title: Analog to Multi-Valued Code Conversion System.
IPC: H03M1/44
Filed: 1967-05-18
Abstract: 1,178,268. Analogue-to-digital converters. FUJITSU Ltd. 18 May, 1967 [18 May, 1966], No. 23098/67. Heading G4H. An analogue-to-digital converter in which the output is in a ternary scale comprises a plurality of stages, a comparator 39-1, Fig. 8, connected to the unknown input signal and to two reference signals (+<SP>1</SP>/ 3  1/3 and - 1/3 max.) and having an output 1, 0 or -1 according to whether the input is greater than +1/3, between +1/3 and -1/3 or less than -1/3 (Fig. 4), an amplitude divider 34-1 also receiving the input to produce an output, as shown in Fig. 5C, which is amplified three times at 36 -1 to form the input for the next stage. The outputs 46 -1 to 46 - n +1 1 of the comparators of the several stages represent the input value in ternary code. The amplitude divider 34-1 divides the applied amplitude into three equal portions as indicated in Fig. 5C, reversing the slope of the output curve for the middle portion. The circuit may be as shown in Fig. 9. The input signal is applied to the primary winding of a transformer 52, the three centre-earthed secondary windings giving equal outputs. The output of winding 54 has subtracted from it a voltage equal to one-third of the maximum value by a battery 57. If the signal is greater than this 1/3 value, the difference is applied via a differential amplifier 69, 61 to a summing resistor 65. If it is less, there is no output because of diode 58. The second output, from winding 55 is applied to a clamp consisting of oppositely acting biased diodes. The biasing batteries have values +1/3 -1/3 and -1/3 of the maximum signal. The clamp output to differential amplifier 67, 68 is the input signal if it is within the middle portion, i.e. between +1/3 and -1/3. If it is greater than this, the output is +1/3, and if less it is -1/3. The output from the third winding 56 is biased by battery 75 by + 1/3 maximum signal. If the input is negative and less than -1/3 max. an output equal to the difference is passed to differential amplifier 77, 78. If not there is no output. The three signals are combined in summing resistors 65, 72, 82 to produce the desired output from transistor 64. The outputs from the differential amplifiers 59, 61 and 77, 78 are applied to circuits 88, 91 which respectively give a binary " 1 " output if the input is greater than + <SP>1</SP>/ 3  1/3 and less than - 1/3. If it lies in the central portion there is no output. These signals are recoded at 87 (Fig. 12, not shown) to give the ternary signal " 1," " 0 " or " -1 " at 95. Another stage circuit giving a similar result is described (Fig. 10, not shown). A quadrinary code converter is also mentioned (Figs. 6 and 7, not shown), but not described. Specification 1,143,423 is referred to.
Patent GB-258087-A (GB)
Title: Improvements in and relating to glazing bars
IPC: C23C2/10
Filed: 1926-02-06
Abstract: 258,087. Hancock, W. Fab. 6, 1926. Coating by dipping. -In an apparatus for coating glazing bars for roofs for conservatories &c. with lead, the bar d is heated by a heating device d and passed through guides b, c, of similar cross-section to the bar and a bath e of molten lead. The coated bar passes from the bath a through a tapered duct f of the same shape as the bar a but larger in cross-section at its lower end in order to give clearance for the moulded covering as it passes through a water bath g where the coating is cooled and set. The bar a may be passed through the apparatus in steps of about one-eighth part of an inch at a rate of substantially 1 foot per minute.
Patent GB-303399-A (GB)
Title: Improvements in and relating to musical instruments
IPC: G10C3/02
Filed: 1927-09-02
Abstract: 303,399. Waddington & Sons, Ltd., and Waddington, W. Sept. 2, 1927. Pianofortes, harmoniums, &c. combined with writing desks, racks, and cupboards.-The top door 1 of the instrument is hinged and can be lowered so as to rest on the cheeks 2 and present a baize-covered writing surface. The, action &c. may be concealed by a stationary rack 3 which may have hand holes 7 for removal. Ink-stands, pigeonholes and other fitments may be added, and a cupboard 4. and chest of drawers 5 may be arranged beneath the keyboard.
Patent GB-727381-A (GB)
Title: Improvements in or relating to optical glass
IPC: C03C14/00
Filed: 1953-08-21
Abstract: 727,381. Glass. DEUTSCHE SPIEGELGLAS-AKT.-GES. Aug. 21, 1953 [Aug. 23, 1952], No. 23140/53. Class 56. A glass, particularly for spectacle lenses, which transmits ordinary light but absorbs infra-red radiations contains in addition to the usual constituents FeO 0.11-0.20, Fe 2 O 3  0.01- 0.02, TiO 2  or WO 3  0.11-0.40 and Se 0.001 to 0.03 per cent parts by weight.
Patent GB-259200-A (GB)
Title: Improvements in a process for preventing the dissolution of iron and steel in sulphuric acid
IPC: C01B17/80
Filed: 1926-09-20
Abstract: 259,200. Newport Co., (Assignees of Schmidt, J. G., and Lee, H. R.). Sept. 30, 1925, [Convention date]. Pickling.-In removing scale or pickling iron and steel articles or removing zinc from galvanized iron, pitting is prevented by adding thiourea or a derivative thereof, such as methyl, ethyl, benzyl, phenyl, or sym. o : o-ditolythiourea or a mixture of the symmetrical dixylylthiourea to the sulphuric acid. The Specification as open to inspection under Sect. 91 (3) (a) comprises also preventing any solution containing hydrogen-sulphate ions, for example a solution of sodium bisulphate from attacking metallic iron. This subject-matter does not appear in the Specification as accepted.
Patent GB-340545-A (GB)
Title: Automatic concrete mixing machine
IPC: B28C7/02
Filed: 1929-07-29
Abstract: 340,545. Rotary mixers. WITHERS, J. S., 51, Chancery Lane, London.-(Koehring Co. ; 31st Street, Milwaukee, Wisconsin, U.S.A.) July 29, 1929, No. 23313. [Class 86.] In a concrete mixing machine, control devices operate the discharge shoot and include means comprising a latch cam device for locking the charging means during mixing, and for operating them at the end of the mixing period to effect recharging of the drum ; the water supply is also automatically controlled by the operation of the skip, and adjustable means are provided for controlling the timing of the charging and discharging operations. The charging means comprises a loading-skip which is raised by a winch I, Fig. 1, controlled by a lever J. The lever J is fitted with a cam 61 and latch 62, both adapted to be engaged by a catch 60 operated by a rod 59 from the control mechanism. As the skip is raised a rod J<11> is moved thereby to the left, and moves the lever J to the position shown, with the parts 60, 62 in engagement. At the end of the mixing operation the rod 59 is raised and the catch 60 engages the cam 61 to move the lever J to throw the winch into gear, the lever J being carried past its dead centre position in both directions by a spring 1a. There is sufficient free play between the parts 60, 62 to permit partial manual operation of the lever J to throw the brake L off to allow the skip to be lowered. The skip pivots about an axis 2 and is fitted with a crank disc 26<1> having a connection 31 with a disc 29. The latter is mounted on a shaft 27, Fig. 2, which carries a disc 30 fitted with adjustable pins which engage an arm El on a co-axial shaft 28 for controlling the three-way valve E of the water supply ; this valve effects connection of the measuring tank D with the main, and drum, respectively. The disc 29 has two connections 34, 35, the former with a member that starts the timing device G, and the latter with an arm 351 on a control device M. This comprises a pair of concentric shafts 37, 38, Figs. 6 and 7, fitted with arms 47, 48 having spring-influenced pawls 49, 50 engaging notches in the boss of an arm 39 mounted freely on the shafts 37, 38. The arm 39 operates a spring- controlled sliding rod 44 controlling the operation of the discharge shoot, which may be of the kind described in Specification 307,869. The arm 39 is rocked to operate the discharge shoot at the end and beginning of the mixing operation by the actuation of the shafts 37, 38 from the timing device, and skip, respectively. The arms 47, 48 have cam surfaces 52 engaging a broad lever 53 connected by a link 55 with a lever 56 connected in turn to the rod 59 which controls the catch 60. The pawls 49, 50 are thrown out of operation by engaging stops 51 the adjustment of which enables a variable amount of overlap in the charging and discharging operations to ensure that the drum does not rotate idly.
Patent GB-920776-A (GB)
Title: Improvements in or relating to implements for laterally displacing crop lying on theground
IPC: A01D78/00
Filed: 1959-07-07
Abstract: 920,776. Haymaking. C. VAN DER LELY N. V. July 7, 1959 [July 22, 1958], No. 23328/59. Class 6(3). In a rake-wheel type of haymaking machine having pivoted arms 11 for supporting the rake-wheels 14 on the main frame 34, the frame has a series of fixed supports 15 for the arms which locate the latter relatively to the frame when the rake-wheels are lifted to a transport position. The main frame is V-shaped and is supported on three swivel-wheels 31, 32, 33 one of which is lockable, the other two being casters. A perforated rib 36 extends around the apex of the frame and receives the ends of a drawbar 37 and associated strut 38 in a number of alternative positions, corresponding to different directions of traction, the rake-wheel arms 11 being turnable from the position shown, for side-delivery, to a position wherein they extend perpendicularly to the limb of the frame, for tedding Fig. 2 (not shown), each arm 11, is pivoted, about a horizontal pivot 9 to a bracket 6 pivoted to the frame by a vertical pivot 2, the bracket 6 being lockable in various angular positions by a pin 8 passed through aligned holes in the bracket and in a plate 4 fixed to the frame 34. A chain 19 and spring 18 limit the downward movement of the rake-wheel, the chain having a variable anchorage 20 on the frame to alter the downward pressure of the rake-wheel on the ground. An abutment 22 on the arm contacts the bracket 6 to provide a full-stop to downward movement. Specifications 920,777 and 920,778 are referred to.
Patent GB-1274011-A (GB)
Title: Vehicle passenger safety means
Inventor: KUEHL HANS
IPC: B64D25/06
Filed: 1969-05-07
Abstract: 1,274,011. Spring drum stress limiting devices. H. KUHL. 7 May, 1969 [13 May, 1968], No. 23355/69. Heading B8B. [Also in Divisions A3 and F2] An energy converter for placing in series etween a vehicle, anchor-point and. a passenger safety belt or slidable seat, comprises a drum 10 on which is wound a cable 12 to which the belt or seat is attached, an adjustable multi-disc brake 16, 17 between the drum and its hub 15 and a. coupling element 23 splined to the hub and having teeth which may be selectively disengaged from a toothed disc 24 on the converter housing for free rotation of the drum and hub within the housing. The hub is normally rigid with the housing through the element 23 which is biased by a spring 26 into engagement with the disc 24. The brake comprises alternate discs 16, 17 splined to the drum 18 and to the hub 19, and compressible to set the force at which the drum clips on the hub, by a plate spring 21 under the action of a nut 20. Depression of a projection 32 on the coupling element 23 releases the toothed coupling and any unwound cable 12 may then be rewound either by a rewind spring 28 or by a handle 33. The drum may be radially extended as shown in dotted lines, to house the wound safety belt.
Patent GB-954027-A (GB)
Title: Continuous process and apparatus for making yarn
IPC: D02G3/08
Filed: 1960-07-04
Abstract: 954, 027. Making paper &c. yarns. R H. MARKS. July 4, 1960, No. 23365/60. Headings DID, DlF and DlW. Yarn is made from material which is relatively stiff when untreated but which has low tensile strength when treated, by rotatably mounting a roll or untreated material; splitting strips from the material and attaching the ends of the strips to rotating spindles; passing the strips through a treating-zone; and twisting each of the strips so treated into yarn sufficiently soon after its passage through the zone to compensate for the loss of of tensile strength caused by the treating-step to prevent the yarn breaking, the movement of the material being produced substantially by the tension exerted by the spindles. The material may be paper drawn from a roll 1 and the treatment may be moistening; the material is drawn past knives 9, 10 some of the resultant strips being guided forwardly and the rest rearwardly by a separator 14 to longitudinal water-troughs 40 where guides in the form of bars 37, 39 are provided: each strip now passes over a twist stop in the form of a driven roller 41 through a guide 43 to a ring-spinning spindle 19, the guide 43 being hinged at 14 to reciprocate with the ring-rail.
Patent GB-676311-A (GB)
Title: Improvements in or relating to locking devices for machine guards and the like
IPC: F16P3/08
Filed: 1949-09-09
Abstract: 676,311. Machinery safety devices. GEE, L. W., and MOLINS MACHINE CO., Ltd. Sept. 5, 1950 [Sept. 9, 1949], No. 23377/49. Class 80 (iv). [Also in Group XXV] A locking device for the guards of machines such as described in Specification 588,129, [Group I], which continue rotation for some time after the machine drive has been stopped comprises a catch 3 (Figs. 1 and 4) adapted to engage in a notch 2 of a latch member 1 on the guard (not shown). The catch 3 is pivoted on a spindle 4 and is controlled by a lost-motion dog clutch connection with a collar 5 also on the spindle 4 and carrying a weight 9 on an arm 8 and a further arm 10. A rod 13 carrying two pins 11, 12 co-operating with the arm 10 is adapted to be actuated in one direction by a solenoid 15 to load a spring 17 and controlled by a clockwork escapement 16 in the other direction in a manner as described in Specification 619,117. Thus on release of the rod 13 an interval of time elapses before pin 11 engages the arm 10 of collar 5 and begins to move weight 9 during which time the catch 3 remains fully engaged. As the weight 9 passes over its deadcentre position it drops over quickly to take up the lost-motion between collar 5 and catch 3 to withdraw the latter from engagement with the latch member 1 when the guard can then be opened. Preferably the solenoid 15 is energised to set the timing mechanism 16 when the starting switch of the machine motor is operated so that the upward movement of rod 13 operates the catch 3 to engage latch 1 through pin 12, arm 10 and collar 5. A switch 18 is also preferably arranged in the motor circuit and adapted to be closed by the latch 1 when the guard is in its closed position. so that only then can the machine be started. A spring-operated snapaction mechanism can be used instead of the weight 9 or the catch 3 may be actuated by a solenoid energised by the rod 13 engaging a switch after a certain amount of movement.
Patent GB-173010-A (GB)
Title: Improvements relating to submersible dynamo-electric machines
IPC: H02K5/132
Filed: 1920-08-11
Abstract: 173,010. Byrne, E. L. W. Aug. 11, 1920. Pumping-machines. - Submersible dynamoelectric machines such as motors for driving pumps of the type in which the machine is protected by allowing the liquid to rise within a bell or casing so as to compress the internal atmosphere are provided with means to prevent loss or deterioration of the internal atmosphere while permitting sufficient communication between the inside and the outside of the casing to transmit the working pressures. The machine or the parts of it to be protected mav be nearly completely isolated from the remainder of the internal atmosphere. Fig. 2 shows a method in which the shaft is carried through a narrow opening connecting the two parts of the casing. Fig. 1 (Provisional) shows a separate passage forming the connection; in this case a fan or screw may be fitted to the shaft where it passes through the casing to circulate the air or other gas. The liquid inside the casing may be nearly isolated from the external fluid, communication being by means of a substantially central restricted port or through a seal. Fig. 2 shows a seal 31, and Figs. 5 and 5a a restricted port. An isolating layer or hydraulic seal of oil through which water of condensation can escape may be provided to prevent contact between the surface of the water and the gas within the casing. The seal may be so arranged that it will retain the oil layer when the machine is raised and may be so proportioned as to allow an initial filling of water, and if necessary the initial volume of gas may be reduced to allow for expansion. An inert gas may be substituted for the air in the casing to reduce the possibility of less by chemical action. An initial hydraulic head may be imposed on the protective atmosphere to prevent loss when working at shallow depths through expansion due to heating. Fig. 1 (Complete) shows the water inlet 18 provided with a pipe 19 to permit such a head to be imposed; a filter 20 may be used. A cock 21 may be provided to allow sufficient liquid to be placed in the apparatus to prevent loss of gas by expansion, and two- or multiple-point suspension 23 may be provided to prevent tilting. A switch 24 may also be provided to give warning when the maximum permissable internal water level is reached. An horizontal drive may be afforded to external apparatus as shown for example in Fig. 7. In an electrically-driven pump the liquid may be admitted to both the bell or casing and the pump through a common intake as shown, for example, in Fig. 1 (Complete), or separate inlets may be employed as shown, for example, in Fig. 2. The admission of the liquid to the casing may be by a port communicating with the suction port of the pump as shown, for example, in Fig. 3. According to one Provisional Specification, means for adding gas to the upper part of the casing may be provided. According to another Provisional Specification, the inlet passage may be provided with inlet ,and outlet valves arranged to open at predetermined differences in internal and external pressures.
Patent GB-316940-A (GB)
Title: Improvements in and relating to light-sensitive apparatus
IPC: H01J40/14
Filed: 1929-08-01
Abstract: 316,940. British Thomson-Houston Co., Ltd., (Assignees of Belt, T. A. E.). Aug. 6, 1928, [Convention date]. Liglit, control of apparatus by ; thermionic relays. - A cumulative ionization or arc-discharge device 7 is operated by means of an electric impulse derived from a light-sensitive cell 4, or by the lack of such impulse, to produce a current flow sufficient to operate directly a relay 6 so as to control an electric circuit in response to light falling on the cell. The voltage applied from the secondary winding 2 of a mains transformer 1 to the circuit A of the cell causes little current to be transferred by a coupling transformer 5 to the circuit B of the arc device, when no light falls on the cell. The voltage applied to the arc device by a second winding 3 is then arranged to be slightly below the voltage at which breakdown occurs. On activation of the cell an additional voltage is applied to the circuit B to the coupling transformer to initiate a substantial discharge by glow or arc, and the current produced operates the relay 6.